HomeFish encyclopediaRay-finned fishesHerringsAnchoviesSwatow thryssa Swatow thryssa (Thryssa adelae) Scientific name: Thryssa adelae Rutter, 1897 The Swatow thryssa (Thryssa adelae) is a marine fish of the family Engraulidae. Native range: Northwest Pacific, Taiwan and northern waters of China, but exact northern extent not known. BiologyDorsal spines (total): 0; Anal spines: 0; Anal soft rays: 34 - 41. Belly with 17 (rarely 28) + 9 = 26 or 27 (rarely 28) keeled scutes from isthmus to anus. Maxilla long, reaching beyond base of first pectoral fin ray; first supra-maxilla small, oval. A dark blotch behind upper part of gill opening.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameThryssa adelaeFamilyEngraulidae (Anchovies)OrderClupeiformes (Herrings)ClassActinopterygii (Ray-finned fishes)Maximum length11.0Depth range0–50 m (0–164 ft)EnvironmentMarine; pelagic-neritic; depth range 0 - 50 mClimateSubtropicalDistributionNorthwest Pacific: Taiwan and northern waters of China, but exact northern extent not known.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026